K&N Powersports Cartridge Oil Filters are designed to satisfy the needs of racers and engine builders as well as the average motorcycle or ATV owner who wants the best oil filter available. Features heavy-duty construction for extreme conditions. Sturdy wrench nut makes oil filter removal quick and easy. Resin-impregnated filter media provides maximum filtering surface for contaminant removal. Anti-drainback valve (where applicable) eliminates dry starts, prevents oil from draining back into crankcase during engine shutdown. Drilled safety wire holes for racing.